Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
86 − 10 = ______
4 × 10 = ______
24 − 10 = ______
66 − 10 = ______
7 × 10 = ______
51 + 10 = ______
88 − 10 = ______
82 + 20 = ______
72 + 20 = ______
1 × 10 = ______
38 + 10 = ______
79 − 10 = ______
9 × 10 = ______
76 − 10 = ______
48 + 20 = ______
88 + 10 = ______
44 − 10 = ______
27 + 20 = ______
45 + 20 = ______
23 + 20 = ______
